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Finding the Fourth Proportional to 85,361.95, 117,813.87 and 49,581.91

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Solution

The fourth proportional to 85,361.95, 117,813.87 and 49,581.91 is: 68,431.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,361.95 : 117,813.87 = 49,581.91 : x
  2. Step 2: Convert to fraction form
    85,361.95/117,813.87 = 49,581.91/x
  3. Step 3: Cross multiply
    85,361.95x = 117,813.87 × 49,581.91
  4. Step 4: Simplify right side
    85,361.95x = 5,841,435,862.11
  5. Step 5: Solve for x
    x = 5,841,435,862.11/85,361.95
  6. Step 6: Final answer
    x = 68,431.38

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.